When adding Grade me to a category, the category breaks (Moodle 4.1.2)

[cdipe]

When trying to add Grade me to a category, there is "Gateway timeout" after some time.
The category breaks and cannot be opened.

I moved the courses in the broken category to another category, and the subcategories and courses are intact, bud the Grade me block is not added.

I also tried to add Grade me to an empty category, same thing happened: The category broke and could not be opened.

Moodle version 4.1.2+ (Build: 20230324)
Grade me version 4.1.0.0 (2022112800)

[cdipe]

(The purpose of adding to a category is to have the Grade me block in all courses in that category)